Variations in Black Guillemot Cepphus grylle natal dispersal and philopatry across Britain and Ireland |
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| Authors: | Daniel T Johnston Robert W Furness Alexandra M C Robbins Mark A Taggart Glen Tyler Elizabeth A Masden |
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| Institution: | 1. Environmental Research Institute, North Highland College UHI, University of the Highlands and Islands, Thurso, UKdaniel.johnston@uhi.ac.uk;3. MacArthur Green Ltd, Glasgow, UK;4. Scottish Natural Heritage, Inverness, UK;5. Environmental Research Institute, North Highland College UHI, University of the Highlands and Islands, Thurso, UK |
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| Abstract: | Capsule: Using ring recovery records collected in Britain and Ireland from 1935 to 2015, we investigated philopatry and dispersal in Black Guillemots Cepphus grylle ringed as nestlings and recovered at breeding age during the breeding season. Levels of philopatry and dispersal distance varied between colonies, and were significantly related to latitude, possibly due to differences in ecology between populations. However, an increase in ringing effort is required to allow robust comparisons of these behaviours between colonies. |
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